Very numerous: all areas, especially Munster. Ir. Ó h-Iongardail now pronounced Ó h-Úrdail in W Cork & S Kerry. It also stands for Ó h-Arrachtáin which is associated with Connacht. MacLysaght also mentions another Connacht name, Ó h-Oireachtaigh which has undergone this anglicisation. IF & SGG.